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Thermosetting resin composition and homeotropic alignment phase difference film

A resin composition and thermosetting technology, applied in coating, instrument, optics and other directions, can solve the problems of easy white turbidity, no polarizer, unstable liquid crystal orientation, etc., and achieve less white turbidity and surface stickiness. Excellent effect with excellent transparency

Active Publication Date: 2018-01-02
NISSAN CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 5) The relationship between the retardation value in the thickness direction of the protective film of the polarizing plate and the retardation value of the +A plate and the +C plate is not shown (TAC, COP, PNB)
[0015] As a means to solve such a problem, the development of a new liquid crystal material that can be vertically aligned on a substrate without using a vertical alignment film has been carried out. For example, Patent Documents 4 to 6 disclose as such a liquid crystal material A side chain type liquid crystal polymer composed of a monomer unit (a) containing a liquid crystal segment side chain and a monomer unit (b) containing a non-liquid crystal segment side chain, but the orientation direction of the liquid crystal of the polymer is not Stable, so there is a problem that it is easy to become cloudy

Method used

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  • Thermosetting resin composition and homeotropic alignment phase difference film
  • Thermosetting resin composition and homeotropic alignment phase difference film
  • Thermosetting resin composition and homeotropic alignment phase difference film

Examples

Experimental program
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Effect test

Embodiment

[0192] The following examples and comparative examples are given to describe the present invention more specifically, but the present invention is not limited to the following examples. In addition, each measurement apparatus used in the Example is as follows.

[0193] [Measurement of average molecular weight]

[0194] Device: Prominence, a high-speed liquid chromatography device manufactured by Shimadzu Corporation

[0195] Column: Shodex (registered trademark) KF-803L+KF-804L

[0196] Column temperature: 40°C

[0197] Solvent: tetrahydrofuran (flow 1mL / min)

[0198] Detector: RI

[0199] Calibration curve: standard polystyrene

[0200] [Film thickness measurement]

[0201] Device: Micrometer MEQ-30 manufactured by Mitutoyo Corporation

[0202] [Evaluation of Rth, Δn]

[0203] Device: Axoscan manufactured by Axometrics

[0204] Rth: Retardation value in the thickness direction of the vertical alignment liquid crystal layer

[0205] Rth={(Nx+Ny) / 2-Nz}×d[nm]

[0206] R...

Synthetic example 1

[0228] [Synthesis Example 1] Synthesis of Polymer P1 (Component A)

[0229] 7.0 g of 6Be synthesized by the method described in Synthesis Example 3 of International Publication No. 2013 / 133078, 2.0 g of LAA (manufactured by Tokyo Chemical Industry Co., Ltd.), 1.0 g of HEMA (manufactured by Tokyo Chemical Industry Co., Ltd.), as a polymerization catalyst 0.17 g of AIBN (manufactured by Wako Pure Chemical Industries, Ltd.) was dissolved in CH18.9 g, and it was made to react at 75 degreeC for 16 hours, and the acrylic-type copolymer solution P1 (solid content concentration 35 mass %) was obtained. The number average molecular weight (hereinafter referred to as Mn.) of the obtained acrylic copolymer was 16,500, and the weight average molecular weight (hereinafter referred to as Mw.) was 35,800.

Synthetic example 2

[0230] [Synthesis Example 2] Synthesis of Polymer P2 (Component A)

[0231] 6Be6.5g, LAA2.5g, HEMA1.5g, and AIBN0.17g were melt|dissolved in CH18.9g, it was made to react at 75 degreeC for 16 hours, and the acrylic-type copolymer solution P2 (solid content concentration 35 mass %) was obtained. Mn of the obtained acrylic copolymer was 15,300, and Mw was 33,200.

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PUM

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Abstract

The thermosetting resin composition of the present invention containing: e.g., (A) a polymer such as is represented by formula (1) having a liquid-crystalline side chain, e.g., a crosslinkable group and a vertically oriented group such as is represented by formula (2); (B) a crosslinking agent; and (C) a solvent is capable of homeotropic alignment without the use of a vertical alignment membrane,and gives a thermosetting membrane or homeotropic alignment phase difference film in which cloudiness (transparency) or surface tackiness is improved. (In the formulas, Y1-Y4 represent single bonds orthe like, Y5 represents a benzene ring or the like, m represents an integer of 0-4, and Y6 represents a hydrogen atom, a C1-18 alkyl group, or the like, the total carbon number of the substituents represented by Y2-Y6 being 6-30. In the formulas, X represents a COO group or an OCO group, R represents a fluorine atom, a cyano group, a C1-6 alkyl group, or a C1-6 alkoxy group, n represents an integer of 1-10, and o and p represent integers of 1 or 2.)

Description

technical field [0001] The present invention relates to a thermosetting resin composition and a vertical alignment retardation film, and more specifically, relates to improving a liquid crystal display (liquid crystal display; LCD), (specifically filled with positive dielectric anisotropy It can be used to make +C plate (positive C plate) based on the viewing angle characteristics of IPS liquid crystal display device (In-plane Switching LCD (IPS-LCD); in-plane orientation switching LCD)) of liquid crystal (△ε>0). A thermosetting resin composition and a vertically oriented retardation film. Background technique [0002] The characteristic of IPS-LCD is that since there is no inclination in the vertical direction of the liquid crystal molecules, there is little change in luminance / color due to the viewing angle, but the disadvantages include difficulty in improving contrast, luminance, and response speed. [0003] For example, as disclosed in Patent Document 1, for the IPS...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/06C08K5/053C08K5/42C08L33/06C09D133/14C09D201/00G02B5/30
CPCC09D133/14C08K5/053C09D201/00C08K5/42C08L33/06C08L101/06G02B5/30C08L33/14C08K5/0025G02B5/3033G02B5/305C09D201/06
Inventor 畑中真菅野裕太伊藤润
Owner NISSAN CHEM IND LTD